Another Coding Performance Question (Javascript) (1 Viewer)

[BlueIshDan]

My goal is to figure out which method is better performance wise.

The two methods being compared are:
- IF ELSE
- Ternary operation = condition ? true : false

Code Examples:

IF ELSE

if (title != "filter by name")
{
    if(title.indexOf(searchvalue) > -1)
    {
        post.stop(true, true).show();
    } 
    else 
    {
        post.stop(true, true).hide();
    }
}

Ternary operation

(title != "filter by name") ? 
    ((title.indexOf(searchvalue) > -1) ? 
        post.stop(true, true).show() 
        : post.stop(true, true).hide()) 
    : null

Maybe a mix of the both could be considered best?

if (title != "filter by name")
{
    ((title.indexOf(searchvalue) > -1) ?
        post.stop(true, true).show()
        : post.stop(true, true).hide())
}

What do you think or, if you have the research skills, can prove is the most performance efficient way of executing this process?

 

[MarkK]

You can do your own performance testing. This is how I would set it up in VBA. You can adapt it to javascript. Basically you do the operation an insanely large number of times, and time it so you get more than 0.0000001 seconds. Then you do the other operation the same number of times and time that. Then you know.

sub test1
   const MAX as long = 100000

   dim clock as single
   dim i as integer

[COLOR="Green"]   'test operation 1[/COLOR]
   clock = timer
   for i = 0 to MAX
[COLOR="Green"]      'do this operation MAX times[/COLOR]
   next
[COLOR="Green"]   'show how much time it took[/COLOR]
   debug.print "Op 1 ran for " & timer - clock & " seconds"

[COLOR="Green"]   'test operation 2[/COLOR]
   clock = timer
   for i = 0 to MAX
[COLOR="Green"]      'do this other operation MAX times[/COLOR]
   next
[COLOR="Green"]   'show how much time it took[/COLOR]
   debug.print "Op 2 ran for " & timer - clock & " seconds"
end sub

Hope this helps,

 

[Bladerunner]

The ternary operation will be faster but not by much. those extra If / Else add up. Not by much . I am talking very small numbers.



Blade

 

[BlueIshDan]

Awesome thanks guys. I'll make a page to test this out!
I'll let you know what the results are!